As high as should be? I just recently started baking. So far, I've made chocolate chip cookies and a tres leche cake. Both were good, but the cookies were pancake thin and the cake was not a big as it should have been either. Anyone know why that may be? Also, I noticed the cake batter had a bunch of bubbles in it. The online did not when the woman made it. What causes the bubbles too? I'm doing something wrong.